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(66+x)/2=76
We move all terms to the left:
(66+x)/2-(76)=0
We add all the numbers together, and all the variables
(x+66)/2-76=0
We multiply all the terms by the denominator
(x+66)-76*2=0
We add all the numbers together, and all the variables
(x+66)-152=0
We get rid of parentheses
x+66-152=0
We add all the numbers together, and all the variables
x-86=0
We move all terms containing x to the left, all other terms to the right
x=86
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